package com.itheima.springbootwebtlias.interceptor;

import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

//1.自定义拦截器类，实现HandlerInterceptor接口
@Slf4j
//3.配置拦截器，交给容器管理
@Component
public class MyInterceptor implements HandlerInterceptor {

    //2.重写方法
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        log.info("拦截器，拦截前... ...");
        //1.登录验证，权限校验，敏感数据检测，字符编码统一处理... ...

        //2.放行，不放行
        return true; //true：放行 ，false：不放行
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        log.info("拦截器，拦截后1... ...");
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        log.info("拦截器，拦截后2... ...");
    }
}
